72results about How to "The connection method is reasonable" patented technology

The invention relates to a machining measurement device of a sealing ring for a triple eccentric butterfly valve. The size is measured through a measurement rod and profiling, the maximum diameter size from the straight side to the inclined side does not need to be measured through a caliper after the theoretical size is in place, a user only needs to directly read readings of a thread dial of a thread dial plate which is supported on a measurement pin, the rotary center of the thread dial plate is as same as the rotary center of a main shaft of a machine tool after the size is in place, and accordingly the size is in place when the reading of the thread dial is zero theoretically, the theoretical size is ensured fundamentally and meanwhile the repeated precision of the measurement is improved and accordingly the measurement does not rely on the technical level of workers, the size accuracy is ensured, and the leakage level of the valve is ensured; the machining measurement device is particularly suitable for the high temperature, high pressure difference and two-way sealing situations and suitable for the coal chemical industry, power plant boiler system application situations; the structure is simple, the use is convenient, the repeated accuracy of the measurement is high, the measurement is simple, the dependency on the workers is not required, the interchangeability of the sealing ring is good, and the import is completely replaced.

The invention discloses a multifunctional educational toy which comprises a base body mechanism, the base body mechanism comprises an observation mechanism, a surface maze mechanism, a bottom plate and a base body inner cavity, a main body of the observation mechanism is transparent cover plates with second threaded holes, and the transparent cover plates are fixedly combined into a cubic structure through bolts; the surface maze mechanism is installed on the lower portion of the observation mechanism, one end of the surface maze mechanism is provided with an external inlet, and the other endis provided with an external outlet. Compared with the prior art, the multifunctional educational toy has the advantages that the multifunctional educational toy is simple and exquisite in overall structure and reasonable in part selection and connection mode, combines two playing methods of the maze and the magic cube, has various structural styles, can properly attract game players addicted to mobile phones, computers and the like, enables the game players to be interested in a certain degree, and enhances logical thinking ability and spatial stereoscopic impression of the players.

The invention relates to a permanent magnet synchronous direct-drive lifting machine with a gear. A built-in multi-disk braking permanent magnet motor as a prime motor to drive a drum of the lifting machine to rotate; the inner wall of the drum is provided with an inner gear ring; a driving output gear of a drum driving device is meshed with the inner gear ring of the drum; a multi-disk braking device is arranged in the rear portion of a rotor of the built-in multi-disk braking permanent magnet motor; a braking disk combination is pushed by a braking elastic device to form braking during non-energization; the braking force applied to the braking disk combination due to the braking elastic device is relieved through a gate opening power device after energization. According to the permanent magnet synchronous direct-drive lifting machine with the gear, the weight is light, the size is small, the speed adjustment range is wide, the operation and the control are convenient, the use is safe and reliable, and the manufacturing cost and the operation cost can be significantly reduced.